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NFL Combine The National Football League (NFL) combine is a forum in which players who want to play in the NFL demonstrate various skills. One skill that is measured is the 40-yard dash. Go to the book’s website to obtain the data file 13_1_23 using the file format of your choice for the version of the text you are using.
(a) What type of variable is 40-yard dash time?
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Order Paper Now(b) Excluding quarterback (QB), the skill positions are cornerback (CB), safety (S), running back (RB), and wide receiver (WR). Suppose we want to know whether there is a difference between the 40-yard dash times for these positions. What would be the null and alternative hypotheses?
(c) Assuming we treat the players as a random sample of all players in each position, explain why we may use a one-way ANOVA to determine if there is a significant difference between 40-yard dash times for these positions. How many means are being compared?
(d) Does the evidence suggest a difference exists for the 40-yard dash times for the skill positions (except quarterback)? Use the 
 level of significance.
(e) Draw boxplots of the 40-yard dash times for the skill positions (except quarterback) to support the results from part (d).
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